DOI Page / Citation link:
https://doi.org/10.11588/diglit.1401#0296
THE ILLUSTEATED EXHIBITOR.
213
water moving more in a straight line, but that is compensated for by the force being applied to a greater
depth of water, being 5 feet in the 20-feet, and only 3 inches in the 1-foot. 159 revolutions with the 1-foot will raise
the water 1 foot high without discharging any ; 318 revolutions, 4 feet; 636 revolutions, 16 feet; and 1,272 revolu-
tions, 64 feet high. The highest elevation to which the water has been raised with the 1-foot pump is G7 ft. 8 in.,
with 1,322 revolutions per minute, being less than the calculated heigut, which may be accounted lor by leakage with
the extra strain.
" While the 1-foot pump is raising 8 tons of water 5 ft. 6 in*, high per mimrte, there is no greater strain on any part
of the pump than 160 lb. on the 6-inch drum, which is equal to a leverage of 3 inches. It will pass almost anything
that is small enough to go through, there being no valves. A quantity of walnuts (about half-a-gallon) were thrown
into the 1-foot pump all at once, when it was at full speed, and they passed through without breaking one."
MOORE'S PATENT "LEVER VENTILATOR."
This simple but very
effective ventilator is well
adapted for every form of
window; . As the top portion
of the window, if Gothic,
round, or otherwise, is
brought into action, the ven-
tilator can be made to take
the place of a single pane of
glass, or, if required, can be
constructed so as to form a
whole window ; it can also
be let into any portion of a
sheet of plate glass. By the
accompanying diagrams the
action will at once be seen
to be that of a rod moving si-
multaneously a given number
of levers, in which are placed
the glass louvres, and which
are made to slide in and out
for the purpose of cleaning.
• The action is so arranged
that no accident can possibly
closing; nor is it in any way
likely to get out of order.
xhe
frame, levers, and
occur to
it by
ope;
or
screws, arc made of brass,
for strength and durability ;
the louvres of glass with po-
lished edges, which, can with
great case be adjusted to the
amount of ventilation re-
quired. When the louvres
are open, no wet can get in,
and tire air passing upwards
is equally distributed ovei
the apartment without draft;
when closed it is air-tight.
The necessity of good venti-
lation, leads us to hope many
of these will be in very
general use. The model oi
this useful invention will be
found in the south-west gal-
lery, Class X., No. 33. It is
the property of Messrs.
Moore and Sons, Clerken-
w ell- Close.
ftf
J
I0tt
JOiXl
tag.
-No IX.
BY CHARLES FOWEER, JUN.
In every building of any size or importance there is some particular portion, which, while it forms a prominent
feature—a kind of culminating point for the whole structure—requires also in the construction the greatest amount oi
care and contrivance. This might be illustrated by many examples, but we will confine ourselves to the one before
us. The Transept of the Exhibition Building, which charms every one that passes under its crystal arch, most
undoubtedly engrossed the greatest amount of thought in its design, and of ingenuity and skirl in its erection.
Is has been already mentioned that the arched ribs which span the transept'are of timber, and were put together
in a horizontal position on the ground ; how to raise them to a height of nearly 70 feet above the ground, and fix them
there without a scaffold or place to hoist
from above the summit of the arch, was the
problem which caused many an anxious
thought to solve. Several schemes were
proposed, and finally one of the boldest was
adopted ; which was to put together a whole
bay of the roof, 72 feet by 24 feet, including
the two principal and the two minor ribs,
with the other timbers, and then to hoist the j
whole framework at once by ropes and pul- M
leys fixed on the flat roofs on either side j^g^M^I
of the transept. This mode offered great§jp§||||||§
advantages, as it was of course much easier IjfessiHI
to put together a framework of timber within W
a few feet of the ground than to do the same "
work at a great elevation, where there would
also be considerable risk of accidents to the S
workmen engaged. The annexed engraving-
shows a pair of ribs framed together with
the other timbers, and the diagonal tie-rod
complete ; the framework was also strength-
ened by a set of temporary ties to each of the
main ribs, to provide for the strains incident
to the variations in position of the ribs during the operation of hoisting. The feet of the ribs were bolted down upon
A FAIR OP RIBS PREPARED FOR RAISING.
213
water moving more in a straight line, but that is compensated for by the force being applied to a greater
depth of water, being 5 feet in the 20-feet, and only 3 inches in the 1-foot. 159 revolutions with the 1-foot will raise
the water 1 foot high without discharging any ; 318 revolutions, 4 feet; 636 revolutions, 16 feet; and 1,272 revolu-
tions, 64 feet high. The highest elevation to which the water has been raised with the 1-foot pump is G7 ft. 8 in.,
with 1,322 revolutions per minute, being less than the calculated heigut, which may be accounted lor by leakage with
the extra strain.
" While the 1-foot pump is raising 8 tons of water 5 ft. 6 in*, high per mimrte, there is no greater strain on any part
of the pump than 160 lb. on the 6-inch drum, which is equal to a leverage of 3 inches. It will pass almost anything
that is small enough to go through, there being no valves. A quantity of walnuts (about half-a-gallon) were thrown
into the 1-foot pump all at once, when it was at full speed, and they passed through without breaking one."
MOORE'S PATENT "LEVER VENTILATOR."
This simple but very
effective ventilator is well
adapted for every form of
window; . As the top portion
of the window, if Gothic,
round, or otherwise, is
brought into action, the ven-
tilator can be made to take
the place of a single pane of
glass, or, if required, can be
constructed so as to form a
whole window ; it can also
be let into any portion of a
sheet of plate glass. By the
accompanying diagrams the
action will at once be seen
to be that of a rod moving si-
multaneously a given number
of levers, in which are placed
the glass louvres, and which
are made to slide in and out
for the purpose of cleaning.
• The action is so arranged
that no accident can possibly
closing; nor is it in any way
likely to get out of order.
xhe
frame, levers, and
occur to
it by
ope;
or
screws, arc made of brass,
for strength and durability ;
the louvres of glass with po-
lished edges, which, can with
great case be adjusted to the
amount of ventilation re-
quired. When the louvres
are open, no wet can get in,
and tire air passing upwards
is equally distributed ovei
the apartment without draft;
when closed it is air-tight.
The necessity of good venti-
lation, leads us to hope many
of these will be in very
general use. The model oi
this useful invention will be
found in the south-west gal-
lery, Class X., No. 33. It is
the property of Messrs.
Moore and Sons, Clerken-
w ell- Close.
ftf
J
I0tt
JOiXl
tag.
-No IX.
BY CHARLES FOWEER, JUN.
In every building of any size or importance there is some particular portion, which, while it forms a prominent
feature—a kind of culminating point for the whole structure—requires also in the construction the greatest amount oi
care and contrivance. This might be illustrated by many examples, but we will confine ourselves to the one before
us. The Transept of the Exhibition Building, which charms every one that passes under its crystal arch, most
undoubtedly engrossed the greatest amount of thought in its design, and of ingenuity and skirl in its erection.
Is has been already mentioned that the arched ribs which span the transept'are of timber, and were put together
in a horizontal position on the ground ; how to raise them to a height of nearly 70 feet above the ground, and fix them
there without a scaffold or place to hoist
from above the summit of the arch, was the
problem which caused many an anxious
thought to solve. Several schemes were
proposed, and finally one of the boldest was
adopted ; which was to put together a whole
bay of the roof, 72 feet by 24 feet, including
the two principal and the two minor ribs,
with the other timbers, and then to hoist the j
whole framework at once by ropes and pul- M
leys fixed on the flat roofs on either side j^g^M^I
of the transept. This mode offered great§jp§||||||§
advantages, as it was of course much easier IjfessiHI
to put together a framework of timber within W
a few feet of the ground than to do the same "
work at a great elevation, where there would
also be considerable risk of accidents to the S
workmen engaged. The annexed engraving-
shows a pair of ribs framed together with
the other timbers, and the diagonal tie-rod
complete ; the framework was also strength-
ened by a set of temporary ties to each of the
main ribs, to provide for the strains incident
to the variations in position of the ribs during the operation of hoisting. The feet of the ribs were bolted down upon
A FAIR OP RIBS PREPARED FOR RAISING.